
.num {
    line-height: 20px;
    width: 60px;
    text-align: right;
}

.num span {
    font-size: 18px;
    line-height: 20px;
    width: 20px;
}

.num-btn {
    font-size: 16px;
    line-height: 20px;
    width: 30px;
    text-align: center;
}